Addresses
65,536
65.5K
Sub-ranges
17+
within this block
PTR Density
0.0%
0 of 65.5K IPs have PTR
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
71/100
Moderate
How this score is built
- Baseline (neutral) 65
- Long-established allocation (15y) +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 37.23.0.0/16
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 37.23.192.0/19 | 8.2K | Rostelecom | AS12389 | RU |
| 37.23.160.0/19 | 8.2K | Rostelecom | AS12389 | RU |
| 37.23.32.0/19 | 8.2K | Rostelecom | AS12389 | RU |
| 37.23.128.0/19 | 8.2K | Rostelecom | AS12389 | RU |
| 37.23.64.0/19 | 8.2K | Rostelecom | AS12389 | RU |
| 37.23.240.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.224.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.144.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.128.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.112.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.96.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.48.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.32.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.16.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.0.0/20 | 4.1K | Rostelecom | AS12389 | RU |
| 37.23.8.0/21 | 2.0K | Rostelecom | AS12389 | RU |
| 37.23.0.0/21 | 2.0K | Rostelecom | AS12389 | RU |
Geolocation
First 256 of 65,536 IP addresses in 37.23.0.0/16
37.23.0.0
37.23.0.1
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37.23.0.255
+ 65.3K more (range too large to list inline)
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 37.20.0.0/14.
Announced prefix
Origin AS
Announcement samples
16,112
Last seen
2026-07-23 15:45:03
Frequently Asked Questions
What is 37.23.0.0/16?
37.23.0.0/16 is a CIDR network block containing 65,536 IPv4 addresses (from 37.23.0.0 to 37.23.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 37.23.0.0/16 network?
The 37.23.0.0/16 range is allocated to Rostelecom and announced via AS12389 from Russia.
Last updated: 2026-07-23 16:55:32 UTC
